SchemaChangeHandler::SchemaChangeHandler(Connection* connection,
RequestHandler* request_handler,
const SharedRefPtr<Response>& response,
uint64_t elapsed)
: MultipleRequestHandler(connection)
, request_handler_(request_handler)
, request_response_(response)
, start_ms_(get_time_since_epoch_ms())
, elapsed_ms_(elapsed) {}
void Logger::LogThread::log(CassLogLevel severity,
const char* file, int line, const char* function,
const char* format, va_list args) {
CassLogMessage message = {
get_time_since_epoch_ms(), severity,
file, line, function,
""
};
vsnprintf(message.message, sizeof(message.message), format, args);
if (!log_queue_.enqueue(message)) {
if (has_been_warned_) {
has_been_warned_ = true;
fprintf(stderr, "Warning: Exceeded log queue size (decreased logging performance)\n");
}
Logger::cb_(&message, Logger::data_);
}
}
void SchemaChangeHandler::on_set(const ResponseMap& responses) {
elapsed_ms_ += get_time_since_epoch_ms() - start_ms_;
bool has_error = false;
for (MultipleRequestHandler::ResponseMap::const_iterator it = responses.begin(),
end = responses.end(); it != end; ++it) {
if (check_error_or_invalid_response("SchemaChangeHandler", CQL_OPCODE_RESULT, it->second.get())) {
has_error = true;
}
}
if (!has_error && has_schema_agreement(responses)) {
LOG_DEBUG("Found schema agreement in %llu ms",
static_cast<unsigned long long>(elapsed_ms_));
request_handler_->set_response(request_response_);
return;
} else if (elapsed_ms_ >= MAX_SCHEMA_AGREEMENT_WAIT_MS) {
LOG_WARN("No schema agreement on live nodes after %llu ms. "
"Schema may not be up-to-date on some nodes.",
static_cast<unsigned long long>(elapsed_ms_));
request_handler_->set_response(request_response_);
return;
}
LOG_DEBUG("Schema still not up-to-date on some live nodes. "
"Trying again in %d ms", RETRY_SCHEMA_AGREEMENT_WAIT_MS);
// Try again
SharedRefPtr<SchemaChangeHandler> handler(
new SchemaChangeHandler(connection(),
request_handler_.get(),
request_response_,
elapsed_ms_));
connection()->schedule_schema_agreement(handler,
RETRY_SCHEMA_AGREEMENT_WAIT_MS);
}
